package com.heima.wemedia.service.impl;


import com.alibaba.fastjson.JSON;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.api.R;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.common.constants.WemediaConstants;
import com.heima.common.constants.WmNewsMessageConstants;
import com.heima.common.exception.CustomException;
import com.heima.model.admin.dtos.NewsAuthDto;
import com.heima.model.common.dtos.PageResponseResult;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.wemedia.dtos.WmNewsDto;
import com.heima.model.wemedia.dtos.WmNewsPageReqDto;
import com.heima.model.wemedia.pojos.WmMaterial;
import com.heima.model.wemedia.pojos.WmNews;
import com.heima.model.wemedia.pojos.WmNewsMaterial;
import com.heima.utils.thread.WmThreadLocalUtil;
import com.heima.wemedia.mapper.WmMaterialMapper;
import com.heima.wemedia.mapper.WmNewsMapper;
import com.heima.wemedia.mapper.WmNewsMaterialMapper;
import com.heima.wemedia.service.WmNewsAutoScanService;
import com.heima.wemedia.service.WmNewsService;
import com.heima.wemedia.service.WmNewsTaskService;
import lombok.extern.slf4j.Slf4j;
import org.checkerframework.checker.units.qual.A;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.*;
import java.util.stream.Collectors;

@Service
@Slf4j
@Transactional
public class WmNewsServiceImpl  extends ServiceImpl<WmNewsMapper, WmNews> implements WmNewsService {

    /**
     * 条件查询文章列表
     * @param dto
     * @return
     */
    @Override
    public ResponseResult findList(WmNewsPageReqDto dto) {
        //检查参数
        //分页检查
        dto.checkParam();

        //分页条件查询
        IPage page = new Page(dto.getPage(),dto.getSize());
        LambdaQueryWrapper<WmNews> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        //根据状态精确查询
        if(dto.getStatus() != null){
            lambdaQueryWrapper.eq(WmNews::getStatus,dto.getStatus());
        }

        //频道精确查询
        if(dto.getChannelId() != null){
            lambdaQueryWrapper.eq(WmNews::getChannelId,dto.getChannelId());
        }

        //时间范围查询
        if(dto.getBeginPubDate() != null && dto.getEndPubDate() != null){
            lambdaQueryWrapper.between(WmNews::getPublishTime,dto.getBeginPubDate(),dto.getEndPubDate());
        }


        //关键字的模糊查询
        if(StringUtils.isNotBlank(dto.getKeyword())){
            lambdaQueryWrapper.like(WmNews::getTitle,dto.getKeyword());
        }


        //查询当前登录人的文章
        lambdaQueryWrapper.eq(WmNews::getUserId, WmThreadLocalUtil.getUser().getId());

        //按照发布时间倒叙查询
        lambdaQueryWrapper.orderByDesc((WmNews::getPublishTime));

        page(page,lambdaQueryWrapper);

        //结果返回
        ResponseResult responseResult = new PageResponseResult(dto.getPage(),dto.getSize(), (int) page.getTotal());
        responseResult.setData(page.getRecords());
        return responseResult;
    }

    @Autowired
    private WmNewsAutoScanService wmNewsAutoScanService;

    @Autowired
    private WmNewsTaskService wmNewsTaskService;

    /**
     *发布修改文章或保存草稿
     * @param dto
     * @return
     */
    @Override
    public ResponseResult submitNews(WmNewsDto dto) {

        //条件判断
        if(dto == null || dto.getContent() == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }

        //保存或修改文章
        WmNews wmNews = new WmNews();
        //属性拷贝
        BeanUtils.copyProperties(dto,wmNews);
        //封面图片 list-->string
        if(dto.getImages() != null && dto.getImages().size() > 0){
            String imageStr = org.apache.commons.lang3.StringUtils.join(dto.getImages(),",");
            wmNews.setImages(imageStr);
        }
        //如果当前封面类型为自动 -1
        if(dto.getType().equals(WemediaConstants.WM_NEWS_TYPE_AUTO)){
            wmNews.setType(null);
        }

        saveOrUpdateWmNews(wmNews);

        //判断是否为草稿，如果为草稿结束但前方法
        if(dto.getStatus().equals(WmNews.Status.NORMAL.getCode())){
            return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
        }

        //不是草稿保存文章内容图片与素材的关系
        //获取到文章内容中的图片信息
        List<String> materials = ectractUrlInfo(dto.getContent());
        saveRelativeInfoForContent(materials,wmNews.getId());


        //不是草稿，保存文章封面图片与素材的关系
        saveRelativeInfoForCover(dto,wmNews,materials);

        //审核文章
       // wmNewsAutoScanService.autoScanWmNews(wmNews.getId());
        wmNewsTaskService.addNewsToTask(wmNews.getId(),wmNews.getPublishTime());


        return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
    }

    /**
     * 1 如果当前封面类型为自动，则设置封面类型数据
     *  匹配规则：
     *      a。如果内容图片大于等于 1 小于 3  单图  type 1
     *      b。如果内容图片大于 3 多图 type 3
     *      c。如果内容么有图片  无图  type 0
     *
     * 2.保存封面图片与素材的关系
     * @param dto
     * @param wmNews
     * @param materials
     */
    private void saveRelativeInfoForCover(WmNewsDto dto, WmNews wmNews, List<String> materials) {

        List<String> images = dto.getImages();

        //如果当前封面类型为自动，则设置封面类型数据
        if(dto.getType().equals(WemediaConstants.WM_NEWS_TYPE_AUTO)){
            //单图
            if(materials.size() >= 1 && materials.size() < 3){
                wmNews.setType(WemediaConstants.WM_NEWS_SINGLE_IMAGE);
                images = materials.stream().limit(1).collect(Collectors.toList());
            }else if(materials.size() >= 3){
                //多图
                wmNews.setType((WemediaConstants.WM_NEWS_MANY_IMAGE));
                images = materials.stream().limit(3).collect(Collectors.toList());
            }else {
                //无图
                wmNews.setType(WemediaConstants.WM_NEWS_NONE_IMAGE);
            }

            //修改文章
            if(images != null &&images.size() >0){
                wmNews.setImages(org.apache.commons.lang3.StringUtils.join(images,","));
            }
            updateById(wmNews);
        }
        //2.保存封面图片与素材的关系
        if(images != null &&images.size() >0){
           saveRelativeInfo(images,wmNews.getId(),WemediaConstants.WM_COVER_REFERENCE);
        }
    }

    /**
     * 处理文章内容图片与素材大的关系
     * @param materials
     * @param id
     */
    private void saveRelativeInfoForContent(List<String> materials, Integer id) {
        saveRelativeInfo(materials,id,WemediaConstants.WM_CONTENT_REFERENCE);
    }

    @Autowired
    private WmMaterialMapper wmMaterialMapper;

    /**
     * 保存文章图片与素材的关系到数据库中
     * @param materials
     * @param id
     * @param type
     */
    private void saveRelativeInfo(List<String> materials, Integer id, Short type) {

        if(materials != null && !materials.isEmpty()){
            //通过图片的url查询素材id
            List<WmMaterial> dbMaterials = wmMaterialMapper.selectList(Wrappers.<WmMaterial>lambdaQuery().in(WmMaterial::getUrl, materials));

            //判断素材是否有效
            if(dbMaterials == null || dbMaterials.size() == 0){
                //抛出异常 第一个功能：提示调用者素材失效，第二个功能，使用数据回滚
                throw new CustomException(AppHttpCodeEnum.MATERIASL_REFERENCE_FAIL);
            }

            if(materials.size() != dbMaterials.size()){
                throw new CustomException(AppHttpCodeEnum.MATERIASL_REFERENCE_FAIL);
            }

            //通过stream流提取id
            List<Integer> idList = dbMaterials.stream().map(WmMaterial::getId).collect(Collectors.toList());
            System.out.println(idList);
            //批量保存
            wmNewsMaterialMapper.saveRelations(idList,id,type);
        }

    }


    /**
     * 提取文章内容中的图片信息
     * @param content
     * @return
     */
    private List<String> ectractUrlInfo(String content) {
        List<String> materials = new ArrayList<>();

        List<Map> maps = JSON.parseArray(content, Map.class);
        for (Map map : maps) {
            if(map.get("type").equals("image")){
                String imgUrl = (String) map.get("value");
                materials.add(imgUrl);
            }
        }
        return materials;
    }

    @Autowired
    private WmNewsMaterialMapper wmNewsMaterialMapper;

    /**
     * 保存或修改文章
     * @param wmNews
     */
    private void saveOrUpdateWmNews(WmNews wmNews) {
        //补全属性
        wmNews.setUserId(WmThreadLocalUtil.getUser().getId());
        wmNews.setCreatedTime(new Date());
        wmNews.setSubmitedTime(new Date());
        wmNews.setEnable((short) 1);//默认上架

        //
        if(wmNews.getId() == null){
            //保存
            save(wmNews);
        }else {
            //修改
            //删除文章图片素材关系
            wmNewsMaterialMapper.delete(Wrappers.<WmNewsMaterial>lambdaQuery().eq(WmNewsMaterial::getNewsId,wmNews.getId()));
            updateById(wmNews);
        }
    }

    /**
     * 查询文章详情
     * @param id
     * @return
     */
    @Override
    public ResponseResult findDetail(Integer id) {
        WmNews wmNew = getById(id);

        if(wmNew == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST);
        }else{
            return ResponseResult.okResult(wmNew);
        }
    }

    /**
     * 删除文章
     * @param id
     * @return
     */
    @Override
    public ResponseResult deleteNews(Integer id) {
        //检查参数
        if(id == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.ARTICLE_NULL);
        }
        //查询文章
        WmNews wmNews = getById(id);

        //判断文章是否存在
        if(wmNews == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.ARTICLE_NOT_EXIST);
        }

        //判断文章是否可以删除
        if(wmNews.getStatus() == 9 && wmNews.getEnable() ==1){
            return ResponseResult.errorResult(AppHttpCodeEnum.ARITCLE_SUBMIT);
        }else{
            //删除文章
            boolean isDelete = removeById(id);
            if(isDelete){
                return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
            }else {
                return ResponseResult.errorResult(AppHttpCodeEnum.SERVER_ERROR);
            }
        }
    }

    @Autowired
    private KafkaTemplate<String,String> kafkaTemplate;

    /**
     * 上架or下架
     * @param dto
     * @return
     */
    @Override
    public ResponseResult downOrUp(WmNewsDto dto) {
        //检查参数
        if(dto.getId() == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.ARTICLE_NULL);
        }

        //查询文章，是否查询到
        WmNews wmNews = getById(dto.getId());
        if(wmNews == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.ARTICLE_NOT_EXIST);
        }
        //查询文章判断文章状态，是否可以下架，如果文章不是发布状态不能下架
        if(!wmNews.getStatus().equals(WmNews.Status.PUBLISHED.getCode())){
            return ResponseResult.errorResult(AppHttpCodeEnum.ARTICLE_NOT_SUBMIT,"当前文章不是发布状态");
        }else{
            //上架或者下架文章 修改enable状态
            if(wmNews.getEnable() == 1){
                //下架文章
                wmNews.setEnable((short) 0);
                updateById(wmNews);
                if(wmNews.getArticleId() != null){
                    //发送消息通知article修改文章配置
                    Map<String,Object> map = new HashMap<>();
                    map.put("articleId",wmNews.getArticleId());
                    map.put("enable",(short)0);
                    kafkaTemplate.send(WmNewsMessageConstants.WM_NEWS_UP_OR_DOWN_TOPIC,JSON.toJSONString(map));
                    return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
                }else {
                    return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
                }
            }else if(wmNews.getEnable() == 0){
                //上架文章
                wmNews.setEnable((short) 1);
                updateById(wmNews);
                if(wmNews.getArticleId() != null){
                    //发送消息通知article修改文章配置
                    Map<String,Object> map = new HashMap<>();
                    map.put("articleId",wmNews.getArticleId());
                    map.put("enable",(short)1);
                    kafkaTemplate.send(WmNewsMessageConstants.WM_NEWS_UP_OR_DOWN_TOPIC,JSON.toJSONString(map));
                    return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
                }else {
                    return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
                }
            }else {
                return ResponseResult.errorResult(AppHttpCodeEnum.SERVER_ERROR);
            }
        }
    }

    /**
     * 自媒体文章人工审核分页显示文章数据
     *
     * @param dto
     * @return
     */
    @Override
    public ResponseResult listVo(NewsAuthDto dto) {
        //1 检查参数
        if (dto == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }

        //2 分页查询文章数据
        IPage page = new Page(dto.getPage(),dto.getSize());
        LambdaQueryWrapper<WmNews> lambdaQueryWrapper = new LambdaQueryWrapper<>();

        //3 按照文章状态查询文章（如果有）
        if(dto.getStatus() != null){
            lambdaQueryWrapper.eq(WmNews::getStatus,dto.getStatus());
        }

        //4 按照标题模糊查询（如果有）
        if(dto.getTitle() != null){
            lambdaQueryWrapper.like(WmNews::getTitle,dto.getTitle());
        }

        //5 按照发布时间倒序查询
        lambdaQueryWrapper.orderByDesc(WmNews::getCreatedTime);
        page = page(page,lambdaQueryWrapper);

        //6 封装结果
        ResponseResult responseResult = new PageResponseResult(dto.getPage(),dto.getSize(), (int) page.getTotal());
        responseResult.setData(page.getRecords());
        return responseResult;
    }

    /**
     * 管理端查看文章的详情
     *
     * @param id
     * @return
     */
    @Override
    public ResponseResult oneVo(Integer id) {
        //1 检查参数
        if(id == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }


        //2 查询
        WmNews wmNews = getById(id);
        return ResponseResult.okResult(wmNews);
    }

    /**
     * 文章详情界面审核失败
     *
     * @param dto
     * @return
     */
    @Override
    public ResponseResult authFailNews(NewsAuthDto dto) {
        if(dto==null || dto.getId()==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        WmNews wmNews = getById(dto.getId());
        if(wmNews == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"文章不存在");
        }
        wmNews.setStatus(WmNews.Status.FAIL.getCode());
        wmNews.setReason(dto.getMsg());
        updateById(wmNews);
        return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
    }

    /**
     * 人工审核通过
     *
     * @param dto
     * @return
     */
    @Override
    public ResponseResult authPassNews(NewsAuthDto dto) {
        //1 检查参数
        if(dto == null || dto.getId() == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }

        //2 查询文章信息
        WmNews wmNews = getById(dto.getId());
        if(wmNews == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST);
        }

        //3 修改文章状态
        wmNews.setStatus(dto.getStatus());
        if(org.apache.commons.lang3.StringUtils.isNotBlank(dto.getMsg())){
            wmNews.setReason(dto.getMsg());
        }
        updateById(wmNews);

        //4 保存文章
        if(dto.getStatus().equals(WemediaConstants.WM_NEWS_AUTH_PASS)){
            ResponseResult responseResult = wmNewsAutoScanService.saveAppArticle(wmNews);
            if(responseResult.getCode().equals(200)){
                wmNews.setArticleId((Long) responseResult.getData());
                wmNews.setStatus(WmNews.Status.PUBLISHED.getCode());
                updateById(wmNews);
            }
        };
        return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
    }
}

